Conduit-building apparatus



t April 2, 19249- T. E. MURRY ET A1. 1,707,446

CONDUI T BUI LDING APPARATUS Filed Aug.6. 1927 f 2 sheets-sheet `1 April2, 1929. jr. E. MURRAY ET Ax. 1,707,446

^ i CONDUIT BULDING'APPARATUS Filed Aug. 6, 1927 2 Sheets-Sheet 2Svweutozs 777oma5 i Murray Georgi?. A. dessu/D Patented Apr. 2, 1929.

ement eprice.

'eoNDUir-iI-LDING KPPRATUS.

.'.Yz dill-. i. i, nl.' This invention relates to Conduit buildingapparatus and ainis to provide a portable v capable oiireadily j'Castinga body Ahaving duets therein.

The invention willibeifiillyi'appareiitiliriny the followingSpeeiiieation when;readin. eenneetion ','w'ith the taeeonipanyingdrawings and tlie features oi ynovelty Awill berpe'irited 'ut v`withpartieularity in the appended AClaims.' 'ln the drawiiige* 'n l Fig. ili'sfja'pe"v Spe'etive view et 'a preferred embodiment of: our;invention2 is a V`lengitiidin'al Seetion Showing the appfaratue in; operationvFig; 3 k'ematransferee eeetion on line 3 3 CfFie-Q. i' F ig. 4 is adetail eeetien on line 1 -L of i Y `the drawings, iur

VFig. a'perepeetive'`viewillustrating certain preferred strueturaldetails.

Referring in jdetail t l improved apperatus ineliules'l hollow v meldsidesA l and l2heldiniepaeed relatienehip by atransversely extendingchannel ltatthe rear and by a transversely extending plate 16 at anintermediatep oint. 4The p latelG` "hasveeeured thereto a plurality offorwardly extending substantially cylindrieifes le. .t

A packer member '2 0Uis adaptedtobe moved longitudinallybetween the meldsides sprocket ehain 325e that ae the vchain is aetuated thepaeker willbe 1n'ovedlongit udinally. Each chain 32 is driven byaeproelret 36secured to a 'erossfehatt msruita'bly journal'led in bearingsl earriedbythe mold sides and l2. At their orwarjd'ends, the hains 82 pass overidle sprockets 4Q earried by bearings f4.2 each of i-fhih-1sadamede beadjusted by .a boltA ,44 threeded threu'eh, e

'-postl secured tothe mold side The outer apparatiisfor'siinple'eo'nstriietion ivhieh is `wall'et" veide isfapeitured asiat '48i me 'e gie meer@ 'efeedjiemgjbol@e. 4For idriving the sproekets, weprovide rotor 52 Carried byfsliaft 5 4 tejvliieh *fiese- "cured a'bevelgear-.56 which nieshee lwith* a pinion 5;8 carried on a s'hort'rshavftjournailed 1n tl'iemotor houeing 62.; I Quteide Ogt `the motor housingthisy shaft is formed with a vsoelreted enlargement V(i4 for engagementwith die Seifer@ end ,66 )Off'weft @Sieurnalled in bearings oi ayokeh72whieh Witha worm'wheel.''Beeeiired'to the The socket connection(S4-66 permits the. all ,zltorito be dbeclld iu'the .Sheff 68 andtheyoke 72 iS Slotted `et A7650. est@ -permiteueh der'aeliinentv`Compressed air or Yother fluid mediumieeupplied to the -motor yby,niean's et -a'suitableflexible tube 78.4 Of

Course, it iefunderetood if desiredla portable eleetrieer other suitablemotor may be 'subetituted forthea'irmotor Ashown.

, The cross 'member lluearrieS/ a Apair of cheek platee 8O betweenAwhiehthe yoke Y7 2 is positioned. Each eheek plate is formed of ,aplurality (0f m9116382 19021196@ orienter@ struck from. the eenter ofthe shaft 38,v The angular position of the y'ekefr'2 can be varied byremoving a loelringfgpinf84 which pa'eses through a lug 86 carried bySaidinember and Swinging the member aboutthe shaft T38* and thenengaging'the pin 84 through another of the vholes 782.

. The legs 24 off thebale22 ytravel through ,Slots 88 formed in the topso 'thernolgd sides.

dewn

Tol prevent material from falling 'afreversible air metor vOfhavingffaSuitable ,embracesleieehafv; `Afi fsv1.j we^ mild, the shaft- 68 earriesa worm 7l which` meshes through theseslets when 'the mold is beingilled, We provitleva detachable hopper-lille member 90havingsubstantially horizoir tal portion 92 which reets on the upper eur-'liaeesof thefinold sidesY '10 and 12,'this member also being providedwith downwardly extending apron portionsl 94 ,which rit be-v tw'eenthemold iside's. This hepper 1nem ber is pla-eed infpesition whenfthepaekerj20 is in ,the r`,retrectedgneetoe Oft Fier 1.,; and material suchconeretehfor` similarplastie materiel 'is dumped l inthe.,1120,1dt-,1ikSpace between theusides 1Q hand `1 2 end after einli-@16eme-m1..hebenefgmfieroppef revered Arpfeeslre itbnsurrlied Lto motor;Through 'the gearing deseribed,

the shaft 88 is rotated, this forces the packer from the position ofFig. 1 toward the right as indicated in Fig. 2. This action compressesthe concrete and at the same time, the packer reacting against the massof material -causes the mold sides and all parts of the apparatusexceptthe packer to travel toward the left in Fig. 2, the under# sides of themold forming a sort of runners .which readily slide along the bottom ofthe trench in which the structure is being molded. After the materialhas has been compressed and the parts reach the position of Fig. 2, themotor willbereversed so as to return the packer to the position of 1against the plate 16 whereupon more material mayk be charged and theoperation repeated until a structure having conduits therein ofthedesired length has been formed.

For preventing material from falling into the space between thetransverse plate 1G and y the movable packer 20, we provide a flexibleshield 90 one end of which is secured at 98 to the underside of the bale22 and the f other end of which is securedat 100 to a is provided with askid or shoe 108 so that the same will easily ride'over the-trench orother support for the machine. Each apron member 106 is flangedoutwardly as at 110, .At the rear each apron member is provided withinwardly extending flanges 112 which are bolted or otherwise secured tothe packer 22 as indicated at 114. The packer in the embodimentillustrated in Fig. 5 is provided at the top with outward extensionsl110 which overlap the flanges 110 and abut au upright flange 118 formedon the band or hopper member 901. This hopper is in most Vrespects aduplicate of the hopper shown in Fig. 1, the chief difference being thatit is `provided with an elongated bottom portion 120. The hopper isadapted to be held `in place by brackets 122 which are secured to theside frame, these brackets being slotted as shown for engagement withstuds 121i carried by the flange of the hopper. The

- packer 20 illustrated in this form of the device, has secured theretoa transversely eX- vtending bar 126 which in turn is connected Withasprocket chain 32, the latter. having secured thereto a suitable'clamping member 128. Each end of this bar travels through a slot 130formed in the inner wall of each side frame. In operation of this formof the device,l it will be understood that when the plastic material 'ispoured it will be retained between the inside aprons 106 which will, ineffect, form the mold sides. end of the mold will be formed .by thepacker. plate 20. WhenV the air motor is put into operation, the top runof the sprocket chains will tend to move to the right. This willcompress the concrete or other plastic material to a. certain degree.After thematerial has been compacted, the chain reacting threugh thepackerwill cause the side frame members to beretracted. That is to say,the side frame members 10 and 12 will slide with respect tothe apronmembers' 106. Thus, it is vclear that there will be no rubbing of theside frames against the sides of the plastic concrete body. The dettedlines in Fig. 5 illustrate the position of the inside aprons at the endof the stroke of the packer member 20. After the concrete has hardenedsufficiently, the air motor will be reversed and the packer plate andvalso the inside aprons will be returned to the full line position shown.lt is clear that the inside aprons will aid the concrete in standing upas the side members 10 and 12 are propelled away fromv the 'moldstructure. These aprons also reduce the frictional resistance inextracting the cores 18.

Various modifications may be made bv those skilled in the art withoutdepart-ing from the invention as defined in the following claims. f f 'IWhat we claim is 1. 1n an vapparatus for building ducts comprisingspa-ced hollow mold sides havingl a packer movable between them,actuatin:g` mechanism for said packer encased within said hollown'iold'sides and means fordriving` said actuating mechanism.

2. In an apparatus for building lducts comprising spaced hollowm'oldsideshaving` a packer movable between them, actuating mechanism for"said packer enclosed within said hollow mold sides, a core supported' atone end b v a member secured to at least one of said mold sides andmeans for driving said actuating mechanism. d

@ne Y lll) 3. In an apparatus for building ducts,

4comprising mold sides, a packer Amovable therebetween, chains mountedon sprockets carried by said mold sides and operativelv connected withsaid packer, means for driving said sprockets, and a fixed core arrangedtoslidably engage Said packer. l l

Il. 1n an apparatus for building ducts comprising a'pair of elongatedhollow moldV side frames, a flexible transmission member mounted formovement lengthwise lwithin each hollow frame, means for driving saidflexible members in unison, a packer movable between said mold sideframes and guided thereby, and a core passing freely.throughV saidpacker. l y 5. In an apparatus 'for building ducts, a pair of mold sideiframes vhaving a packer l movable therebetween, a core whichpassesfreely through said packer, and ,a` shield vfor vli) said eore. i

6. In an apparatus ffor building ducts,

a pair of mold side frames having a packer movable therebetween, aco-rewhich passes f" l th- 'h "'l l7 i l H r'ble iiee y ioug sait paciei, anca esi -o shield for said "core having one end secured to said packerandthe opposite end secured to said side frames. l 'p u n 7. ln anapparatus for building ducts, a pair of hollow mold sidefframes, a ceresupported thereby,a 'packer movable.betweenv said frames adapted 'tocompact -material about said core, drivers for said paclrerfenclosed insaid hollow ranies,fmeinbersse cured to said packer extending throughyslots formed in said trames and engaging in said frame'sand engagingsaid Vflexible drivers anda detachable charging ,hopper having portionsadapted to oever said slots.

9. ln an apparatus forv building ducts, al pair of mold sidevframes, acoreisupported thereby, a packer movable between said frames adaptedtojcompact material about said core, iexible drivers for sa-id'packerenclosed in said frames, a kshaft supported by said frames fortransmitting power to said drivers., a yoke Journalled onsaid shaft, a`

motor carried by said yokev` andvpowertrans.- mission means connectingsai'dfmotor and said shaft.' l

' l0. Inan apparatus or building` ducts, a

pair of moldside frames, a Core.` supported thereby, a packermovablebetween said frames adapted to compact material about said core,iieXible drivers for said packer enclosed in said frames, a shaftsupported by said frames for transmittingl drivers, al yoke `journalledon said shaft, a motor `detaehablyi .l engaging said yoke, a worinkwheel carried by Vsaid shaft, a worin o( rrie'd by said'yole meshingwith said worm power to said i wheel and means for detachably connect- Ying said worm with said motor. I

`1l. An apparatus for building ductscomp risiiig spaced side frames, apackermovable between said side frames, inneraprons securedto saidpackeradapted tol form mold sides and means for moving said packer relativelyto saidA side frames.

. l2. An apparatus forbuildiiig ducts coin-- prising side frames, apacker movable there-` between, inner upright apronsfseeured to saidpacker, acore supported at one end to a transverse member'secured tosaid side trames, and mea-ns'for moving thepaclrer relatively to saidsidel frames.

18.k An apparatus for building ducts' com-,

pris'iiig a pairof spaced upright side frames,

ay core supported thereby', a packer movable between said frames adaptedvto compact niaterial about said core, upright side aprons secured tosaidpacker in juxtaposition to said side frames 'and' flexible driversoper'- ativelyconnected with said packer. y.

^ 14. An apparatus for building duets com- .prisingV a pair of sideframes, a core supported thereby,a pac-ker movable between said frames,sidev aprons secured `to saidv packer, flexible drivers for saidpackereii-V u closed insaid side frames and a member secured to saidpacker andv operatively eon-.

nected with said lexibleidrivers. y ll5. An apparatus for building ductscomprisinga pair of side Aframes, acore -sup-v ported thereby, a packermovable between said frames, side aprons secured to said packe-r',flexibledrivers for said packery enclosed in said side frames and amember sel,curedto said packerv aridoperatively. oonnected-'withsaidzexible drivers, la motor for transmitting power lto said viiexibledrivers.

In witness whereof, rwe have hereunto Sign-ed 0111 names l f-TiioMiis E.MURRAY.

GEORGE-K. JESSUP.

